1. the above code compiled with gcc4 and PGI (7.1-4 or 7.2) is ok
2. the above code compiled with openmpi (1.2.5 or 1.2.6) with gcc4 is ok
3. the above code compiled with openmpi (1.2.5 or 1.2.6) with PGI (7.1-4 or
7.2) the test doesn¹t pass (Segmentation fault)